Fuji Electric Frenic Mega Series - Periodic Inspection

7.2 Periodic Inspection
7-2
7.2 Periodic Inspection
Perform periodic inspections according to the items listed in Table 7.2-1. Before performing periodic
inspection, shut down the power and then remove the front cover.
Table 7.2-1 Periodic Inspection List
Check part Check item How to inspect Evaluation criteria
Environment 1) Check the surrounding temperature,
humidity, vibration and atmosphere (dust,
gas, oil mist, or water drops).
2) Check that tools or other foreign
materials or dangerous objects are not
left around the equipment.
1) Check visually or
measure using
apparatus.
2) Visual inspection
1) Standard
specifications must be
satisfied.
2) No foreign or
dangerous objects are
left.
Input voltage Check that the input voltages of the main
and control circuits are correct.
Measure the input voltages
using a multimeter or the
like.
Specifications for input
voltages must be
satisfied.
Keypad 1) Check that indication is clearly visible.
2) Check that no parts of letters, etc. are
missing.
1)，2)
Visual inspection
1)，2)
Indication is visible and
without abnormality,
Structure such as
frame and cover
1) Check for abnormal noise or excessive
vibration.
2) Check for loose bolts (at clamp sections).
3) Check for deformation and breakage.
4) Check for discoloration caused by
overheat.
5) Check for contamination and
accumulation of dust or dirt
1) Visual and audio
inspection
2) Retighten.
3), 4), 5)
Visual inspection
1)，2)，3)，4)，5)
No abnormalities
Common 1) Check that bolts and screws are tight
and not missing.
2) Check the devices and insulators for
deformation, cracks, breakage and
discoloration caused by overheat or
deterioration.
3) Check for contamination or accumulation
of dust or dirt.
1) Retighten.
2)，3)
Visual inspection
1)，2)，3)
No abnormalities
Conductors
and wires
1) Check conductors for discoloration and
distortion caused by overheat.
2) Check the sheath of the wires for cracks
and discoloration.
1)，2)
Visual inspection
1)，2)
No abnormalities
Terminal
blocks
Check that the terminal blocks are not
damaged.
Visual inspection No abnormalities
1) Check for abnormal odor or cracks in
insulators caused by overheat.
1) Olfactory and visual
inspection
1) No abnormalities
Main circuit
Braking
resistor
2) Check for wire breakage. 2) Check the wires
visually, or disconnect
either one of the wires
and measure the
conductivity with a
multimeter.
2) Within approx. ±10%
of the resistance of
the braking resistor